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应用高效液相色谱-电感耦合等离子体质谱联用技术分析研究畜肉中硒形态
引用本文:李乾玉,刘丽萍,陈绍占,刘洋,郭巧珍,王一鸣. 应用高效液相色谱-电感耦合等离子体质谱联用技术分析研究畜肉中硒形态[J]. 中国食品卫生杂志, 2024, 36(3): 284-291
作者姓名:李乾玉  刘丽萍  陈绍占  刘洋  郭巧珍  王一鸣
作者单位:1.首都医科大学公共卫生学院,北京 100069;2.北京市疾病预防控制中心, 食物中毒诊断溯源技术北京市重点实验室,北京 100013
摘    要:目的 应用高效液相色谱-电感耦合等离子体质谱联用技术(HPLC-ICP/MS)分析研究畜肉中Se(Ⅵ)、Se(Ⅳ)、SeCys、MeSeCys和SeMet 5种硒形态。方法 采用超声辅助蛋白酶ⅩⅣ和胰脂肪酶酶解提取畜肉中硒形态,以C18反相色谱柱为分析柱,10 mmol/L柠檬酸和5 mmol/L己烷磺酸钠(pH=4.0,含1%甲醇)为流动相,等度洗脱,HPLC-ICP/MS分析。结果 5种硒形态可在7 min内有效分离,在线性范围内相关系数均>0.999,线性良好;Se(Ⅵ)、SeCys、MeSeCys和SeMet 4种硒形态检出限为0.000 3~0.002 mg/kg,不同浓度水平的加标回收率为80.0%~103.3%,相对标准偏差均小于6.8%,有证标准物质ERM? BC210a测定值在标准值范围内。结论 该方法适用畜肉中Se(Ⅵ)、SeCys、MeSeCys和SeMet的分析测定。畜肉中的硒形态主要为SeMet,同时含有少量的MeSeCys和SeCys。

关 键 词:高效液相色谱-电感耦合等离子体质谱  畜肉  酶解法  硒形态
收稿时间:2023-06-25

Determination of selenium species in livestock meat using HPLC-ICP/MS
LI Qianyu,LIU Liping,CHEN Shaozhan,LIU Yang,GUO Qiaozhen,WANG Yiming. Determination of selenium species in livestock meat using HPLC-ICP/MS[J]. Chinese Journal of Food Hygiene, 2024, 36(3): 284-291
Authors:LI Qianyu  LIU Liping  CHEN Shaozhan  LIU Yang  GUO Qiaozhen  WANG Yiming
Affiliation:1.School of Public Health, Capital Medical University, Beijing 100069, China;2.Beijing Center for Disease Prevention and Control, Beijing 100013, China
Abstract:Objective To apply high performance liquid chromatography-inductively coupled plasma mass spectrometry (HPLC-ICP/MS) to the analysis of five forms of selenium [Se(Ⅵ), Se(Ⅳ), SeCys, MeSeCys, and SeMet] in livestock meat.Methods The selenium species were extracted using the ultrasonic-assisted enzyme method, with C18 reversed-phase column (250 mm×4.6 mm, 5 μm) as the analytical column, 10 mmol/L citric acid and 5 mmol/L sodium hexane sulfonate (pH=4.0, containing 1% methanol) as the mobile phase, and an injection volume of 20 μL.Results Four selenium forms were separated in 7 min, with correlation coefficients greater than 0.999, indicating good linearity. The detection limits of Se(Ⅵ), SeCys, MeSeCys, and SeMet ranged from 0.000 3-0.002 mg/kg. The spiked recoveries of selenium-enriched pork at three concentrations (low, medium, and high) ranged from 80.0% to 103.3%, with a relative standard deviation of less than 6.8%. Certified Reference Material ERM? BC210 revealed values within the standard range.Conclusion The developed method was suitable for determining Se(Ⅵ) SeCys, MeSeCys, and SeMet in livestock meat. The meat was found to mainly contain SeMet and small amounts of MeSeCys and SeCys.
Keywords:HPLC-ICP/MS  livestock meat  enzyme digestion  Selenium species
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